Loom.



W. H. UNDERWOOD.

LOOM.

APPLICATION FILED OUT. 28, 1912.

1,109,090. I Patented Sept. 1,1914.

2 SHEETS-SHEET 1.

THE NORRIS PETERS 60.. PHOTU-LITHD.. WASHINGTON. D. C.

W. H. UNDERWOOD.

LOOM.

APPLICATION FILED 001'. 28, 1912.

Patented Sept. 1, 1914.

2 SHBETSSHEET 2.

T'Ha. WASHINGTON. D

' LOOM.

"To all whom it'mdi hOMWn:

- "Be it'known that I, VVALTER H. UNDER- VVOOD,'2L citizen of the United States, and

resident of New York, county of New. York,

and State of New York, have invented certain new and useful Improvements in Looms, of which the following is a: speci- Thisinvention relates to, looms andfmore' particularly to improvements wherebyhthe looms of the type incommon useare adaptedjto'weave the fabric described and claimed in my Patent No. 1,012,031, issued December 19,1911. J i a The yarn described in my above mentioned patent is found to be more or'less sticky when it is attempted to weave the same on the ordinary loom,'because of the nature of the fibers, they" havlng'microscopical saw-like edges which cause the 0011-.

tactingyarns to stick together. ,This stickiness prevents the weft or filler from being beatenup closely to the woven fabric and also,'owing to the fact that some of the yarnsare weaker or tauter than others, causes breakage-of the yarns, rendering a stoppage of the loom necessary.

It is the object of the present invention to overcome these difliculties in the, weaving of metallic yarns so that a 'llIllfOll'l Tand" I closelywoven fabric may be produced. I

- accomplish these objects by having each of the warp threads passed through a small 1 tube which extends rearwardly fromzapoint close to the woven fabric toa pointJrear wardof the, reed whichbeats the Weft or filler; into position. A single" yarn passes through each off-these tubes' and as the tubes l areof just sufiicient sizeto permit the yarns to pass 'gtherethrou'gh, the [surface fibers v of the yarns will besmoothed out? WVhen de-;

sired, morethan one warpthreadmay be passed through each tube, as for example,

7 two warp threadsare passed through each tube infmaking what "is known as; the basket weave. The weft' or filler, inheing'beaten up engages the smooth 'orltersur- 7 beaten into position.

face of the tub'es an'd istherefore readily further object is to provide means for having a comparatively wide-open she'dgto receive the weft, and this'is accomplished by having the ends of the tubes closej'to the woven fabric' so that when the weftis='beaten I Specification of I etters Patent. f ;P ait jllted Sept. 1, 19 14:. 7 1 ,Application fiIedOetober 28,1912. ;Seria1' No. 728, 303. 1 1

up the ends of theftubes are separated, there- *byopeningthe shed-' It will be obviou s' to thoseskilled in the" art that the inventionmay be embodiedin various forms of mechanism, some of which are illustrated in the {accompanying drawings, and therefore I do not' wish. tobe limitedto these'particular mechanisms, but

iclaim *allinechanisms for this purpose which come within the scope. of the appended claims.

less diagrammaticview of certain portions fof a loom ofordinary construction, embodying one form of the invention, the new be-r ing a longitudinal section; F1g. 2 1s a plan View of theparts shown in Fig. .1; Fig. 3 is a perspectiveview. of one form of tube; Fig. is a perspective view" of another form of tube; Fig dis a diagrammaticview of another form of mechanism for holding the tubes in position; Fig.6 is a diagrammatic view showingrthe manner in! whichthe shed is opened by the weft. or filler; Fig. 7 is a diagrammatic View of a third form of mechanismufor"holding the tubes in position; Fig; 8 is a perspective view of the forward end of a tube which may beused in the mechanism. shown in Fig. 7.

ticularly to Figs. 1 andv 2, 10 indicates one of the side frames of a loom, lland 12 the harness frames, 13 the lay and lathe reeds for-beating the weft or fillerinto position. The warp threads'15 and '16 passthrough eyes of the heddles 17, these threads being separated by means of the heddles'to form In the drawingsFigure 1 is" a more or Referring to the drawings and morepara the shed which extends from'fthe point 18, i

this point being the end of thewoven fabric. The-J warp threads 15 and l6 pass "through th'etubes 19 and 20, respectively,

these tubes having their forward ends arranged as closely as practicable "to apoint 18 andextending rearwardly to a point be-- yond the rearmostposition of the reeds 14.

The tubes may be circular: in crosssection asshown in'Fig. 3, or ovallorthey inayzbe rectangular, as shown in Fig. 4, and each tube :is provided at its rearwardend withan eye 21 to which may be attached the device for holding theHtu-be in position "so'sthat it will not be carried along Y with. thexwarp threads and woven into the fabric.

wAssho'wn in Figs. 1 and 2, the device for holding each of the tubes in position comprises an upright rod 22 having its ends pivotally connected to links 23 and 24, these' links being ofthe same length and being pivoted at their forward ends to'rods 25 and 26- larly connected with a supporting member 32 and it will be obviousthat the slots will permit the brackets to be adjusted longitudinally of the loom for the purpose of adjusting the tubes. a

In Fig. 1 the reed lt is shown in its rearmost position-and when the parts are in this position the shuttle is passed through the triangular space between the reeds and the tubes to place a weft or filler thread therein. The lay 13 is then moved forwardly, and beats'the weft up to the point 18. As will be readily observed, the weft thread, in being beaten up to the point 18, engages the smooth outer surface of the tubes 19 and 2O and since these tubes are very close together at their forward ends, the weft will separate the ends, as shown in Fig. 6, and open the shed so that'the reeds can beat the weft up close to the thread previouslylaid. Afterthe weft has been beaten intoposition the harness frames 11 and 12 are shifted in the.

usual manner, the frame 11 moving downwardly fromthe position shown in Fig. 1 to the level of the frame 12: and the: latter frame moving upwardly from the position shown in Fig. 1 to the level of the frame 11. The operation of passing the shuttle through the shed and beating up the Weft is then repeated.

As theharness frames move they carry the warp threads with them and also the tubes.

From Fig. 1 it will be obvious that ;as the warp threads are shifted theeyes21 on the.

tubes will be caused to move; in circular arcs approximately about the point 18 so that the tubes will be maintained in practically the may be cut away for a short distance from their forward ends as shown at 34: in Fig. 3,

this cutting of the tubes enabling the packing of the fillermore closely against the sides of the warp threads.

In cases where it is-desirable to open the shed to an unusual amount, rectangular tubes, as shown in Fig. 4, may be employed. These tubes are arranged with their longer sidesarranged vertically and are providedat ted line position shown in Fig. 5. a o In Flg. 7 I have shown another devlce for holdmg the tubes 1n posltion, this device contheir ends with plugs or eye-lets 35 through which the warp threads pass. It will beobvious thatth e shed will be open to a con siderable "extent by the weft when it passes the forward ends of the rectangular tubes.

In Fig. 51 have shown another device for holding the tubes, this device consisting of an arc shapedarm 36 secured to the tube and passing through a suitable guide 37 secured to the frame of the machine in any suitable manner. It will be obvious that in this construction the tube will not move longitudinally of the warp thread as the latter is shifted from the'full line position tothe dot sisting ofa flexible wire or cord 38 which is secured to the eye 21 of the tube and passes,

rearwardly alongside of the warp thread and through the eye in the heddle and is secured to a rod 39 which-extends transversely of the loomfat a point preferably directly above the beam or point where the warp threads divide Y in passing to the heddles to form the shed.

It will be obvious that the wire 38 will hold the tube againstforward movement and to overcome any tendency for the tube to be drawn rearwardly. by the reed, the forward; end of the tube maybe split as shown in Fig. 8 and the ends slightly crimped so that-the 'tubewill engage'the warp thread at this point with 'suflicientfrictionto prevent its rearward movement.

, The efiect-ive length of the tube will ordinarily amount to only two or'three inches from the forward end thereof, but since it is necessary toprevent the tubes from catching the reed during thebeat they are made long enough to extend to a point rearward of-the reed.

Where it is the purpose to merely prevent I the weft threads, from sticking during the, beat the tubes may be made of flexible material such as woven silk or other smooth fabric, or a fine, closely wound metal wire spring in the formof a tube may be used.

In some instances, in order to prevent the tubes. from being woven into the fabric it may be necessary to'withdraw the tubes;

slightly after the weft has been beaten up and itwill be obvious thatthis' may bereadily accomplished with the devices which I have shown forholding the tubes. For example, in the device shown in Fig. 1, if the links 23 are shorter than the distance between theeyes 21 on the tubes and the point 18, the tubes will be drawnrearwardly to a slight extent when the harness frames are shifted.

I-Iaving I claimis: r Y

{1.21115} loom, a vreed for beating th weft into position and tubular members adapted thus described my invention, what to receive the warp threads and extending forwardly and rearwardly of the limits of movement of the reed. j Y

2. In a loom, a reed for'beating the weft into position, tubular memberaadapted to receive the warp threads, and havingtheir forward ends arranged close to the woven v fabric and theirrear ends arranged rearward of the rearmost position of said reed, for the purpose described. I 3. In a loom,:a reed for beating the weft into position, tubular members adapted to receive the warp threads, and having their forward ends arranged close-to." the woven fabric wherebythewe'ft will open the shed as it. passes the: forward ends of the tubular members.

4:. In a loom, meansjfor beating the weft thread into position, shedding mechanism,

and means whereby the shed'is additionally opened at the fabric to permit the weft to be laid close to the fabric.

5. In a loom,;means for beating the weft intoposition, means for shifting the posireceive the' warp threads, and having their a 3 0 forward ends arranged close to the woven fabric, and means for holding said tubular members in position (on the warp threads,

for the purpose described. 7 I In a loom, tubular members adapted to receive the warp threads, and having their forward ends arranged close tov the woven fabric, and means for holding said tubular members in position, said tubular members having their side portions cut away at their forward ends.

8. In a loom, rectangular tubular mem bers adapted to receive the warp threads, and having their forward ends arranged close to the woven fabric, and shedding mechanism for moving said members in parallel planes, for the purpose described.

' i 9. In a loom, tubular members of oblong rectangular cross section adapted to receive the warp threads and having their longer sides arranged vertically, said tubular members having eyelets in their ends through whichthe warp threads pass, for the purpose deseribed.

10. In a loom, reeds for beating the weft into posit-ion, tubular members adapted to receive the warp threads and having their forward'ends arranged close to the woven fabric and their rearward ends arranged rearward of the rearmost position of said reeds,and means connected with said tubular members rearwardlyof said reeds and adaptedto hold the tubular members in poi In testimony v in presence of two witnesses. p

WALTER H. UNDERWOOD. Witnesses I i J os. B. GALLAGHER, f 'J 0111's .OKnnrn.

sition.-

whereof I aflix my signature Copies of this patent may be obtained for five cents each, byaddressing th cb s of ratents,

Washington, D. G. 

